Electrician-led solar in Fairfax

Solar Panel Installation in Fairfax, VA

AJ Long Electric is based at 2724 Dorr Ave in Fairfax and has wired Fairfax County homes since 1996. We install the array, the panel, the battery, and the EV charger as one job, with a master electrician on site.

A master electrician is on site for every solar project. $2.40–$2.85/W installed, cash. Fairfax County waives the solar permit fee, and we file the Dominion or NOVEC interconnection for you.

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Content reviewed 2026-09-02

Colonial-style brick home with dark rooftop solar panels and closed exterior electrical equipment, Fairfax, Virginia

Google reviews

1,463 across four profiles

Family-owned

Since 1996

Licensed and insured

VA 2705031092

On every install

Master electrician on site

Before work

Written scope and price

Cost

What solar costs in Fairfax

A typical 8 to 12 kW rooftop system installs for $19,000–$34,000 cash, which is $2.40–$2.85/W. These are cash installed prices for modules, racking, inverter, and interconnection labor. The proposal identifies the equipment and installation scope handled by AJ Long Electric.

Fairfax roofs are mostly 1960s to 1990s colonials and split-levels with asphalt shingle and a south or west face, which is easy solar. Many of those homes are still on 100A or 150A service and need the heavy-up we already do, so it is priced on the same proposal at the published $3,500–$7,500 range.

Installed prices by system size
System size	Typical annual production	Installed price, cash
8 kW	About 10,000 kWh	$19,200–$22,800
10 kW	About 12,500 kWh	$24,000–$28,500
12 kW	About 15,000 kWh	$28,800–$34,200

Production assumes about 1,250 kWh per kW per year for a typical Northern Virginia roof. Your bill and your roof set the real number.

Incentives

Fairfax County solar incentives in 2026

The federal residential credit is gone. What is left in Fairfax is still worth real money. Every item below is built into the proposal.

Fairfax County Land Development Services waives the residential solar permit fee.
Fairfax County: Going Solar Fairfax County: Residential Solar Permits
The Department of Tax Administration exempts solar equipment from property tax for five years in the county. Inside the City of Fairfax the exemption runs ten years.
Fairfax County: Solar Equipment Property Tax Exemption City of Fairfax: Solar Energy Equipment Tax Exemption
Dominion one-to-one net metering was confirmed by the State Corporation Commission in April 2026, and the SRECs your system earns stay yours.
Dominion Energy Virginia: Net Metering
Virginia Code 58.1-3661 is the state law behind the local exemptions and covers residential systems up to 25 kW.
Virginia Code 58.1-3661: Solar Energy Equipment Exemption

Read the 2026 Fairfax County solar incentives guide

Why an electrician

Why Fairfax homeowners choose an electrician for solar

Solar companies subcontract the electrical. The crew that shows up for the panel, the heavy-up, and the interconnection is usually a subcontractor the salesperson has never met. AJ Long Electric is that electrical contractor, so the whole job is ours, under one license, with a master electrician on site.

Fairfax County has inspected our work since 1996. We know the residential solar record, the separate electrical record for a heavy-up, and the Dominion and NOVEC interconnection steps, because permits and inspections in this county are our daily work.

The price is a cash installed number. The panel, battery, and EV charger are itemized on the same proposal instead of showing up later as a change order.

Solar makes sense in Fairfax when

Your roof has a south or west face with limited shade and your bill is big enough for an 8 to 12 kW array to offset most of it.
Your home is on 100A or 150A service and you were already planning a heavy-up.
You want an EV charger or a battery designed with the array instead of added later.

Fairfax neighborhoods we serve

All within a short drive of our shop on Dorr Avenue.

Fairfax CityFair Oaks Fair Lakes Kings Park Mantua Fairfax Station Burke Oakton Vienna Annandale Chantilly Centreville

Google reviews

What Fairfax homeowners say

Google reviews from panel, heavy-up, and EV charger jobs. Solar reviews land here as installs finish.

AJ Long consistently performs great work. They were able to install the Tesla charger without having to cut any holes in the drywall in my basement. This was important for me since I had special drywall on my ceiling to soundproof noise between the floors. The work was done very cleanly and professionally. Sai and Bo were great! Thanks guys.

Mike Zacharia, Google review

Installed a garage circuit panel, ran the cable through conduit, about a 50 ft run, Installed breakers, ran wire for three new outlets. Super clean, quality work. Sai and Andrew were great. Highly recommended.

Matthew Lemons, Google review

AJ Long recently installed an EV charger at my residence and they were fantastic! They kept me informed of when they would do the work and how long it would take. Their prices are competitive and fair - I highly recommend them!

Stuart Billings, Google review

Fairfax solar questions

Is my house in the City of Fairfax or Fairfax County, and does it matter?

It matters for the permit office and the tax exemption, not for the price. The City of Fairfax is an independent city with its own permit checklist and a ten-year solar property tax exemption. Fairfax County issues its own permit, waives the fee, and exempts the equipment for five years. Many homes with a Fairfax mailing address are in the county. We confirm the jurisdiction from your parcel and file with the right office.

City of Fairfax: Solar Installation Checklist Fairfax County: Residential Solar Permits Fairfax County: Solar Equipment Property Tax Exemption City of Fairfax: Solar Energy Equipment Tax Exemption

Does Fairfax County charge for a solar permit?

No. Fairfax County waives the permit fee for residential solar, so there is no permit fee line on your proposal. We still pull the permit and schedule the inspection.

Fairfax County: Going Solar Fairfax County: Residential Solar Permits

Who is my utility, Dominion or NOVEC?

Look at the top of your electric bill. Most Fairfax addresses are Dominion Energy Virginia. NOVEC serves parts of the western county around Centreville, Chantilly, Clifton, and Fairfax Station. Both offer net metering, and we file the interconnection with whichever one serves you.

Dominion Energy Virginia: Net Metering NOVEC: Net Metering

Do I need a new panel?

Many Fairfax colonials and split-levels from the 1960s through the 1990s still run 100A or 150A service, and a heavy-up is often the first step. Some 200A panels need a main breaker or busbar change to accept the backfeed. We run the load calculation on the site visit and price any panel work on the same proposal at the published $3,500–$7,500 range.

Fairfax County: Residential Solar Permits

How long from signed proposal to permission to operate in Fairfax County?

We pull the county permit and file the Dominion or NOVEC interconnection the week you sign, and we put the expected range in writing with your proposal, because it moves with the permit queue and the utility review that month.

Fairfax County: Residential Solar Permits Dominion Energy Virginia: Net Metering

We handle this for you

Permits, Dominion, and NOVEC in Fairfax

We pull the permit, file the interconnection, and schedule the inspection. Here is how it works for a Fairfax address.

01
Fairfax County Land Development Services issues the residential solar permit and waives the fee. An address inside the independent City of Fairfax uses the city checklist instead. We confirm which one applies from the parcel, not the mailing address.
Fairfax County: Residential Solar Permits City of Fairfax: Solar Installation Checklist Fairfax County: Going Solar
02
Most Fairfax addresses are served by Dominion. Parts of the western county around Centreville, Chantilly, Clifton, and Fairfax Station are NOVEC. We read the utility off your bill and file the interconnection with the right one.
Dominion Energy Virginia: Net Metering NOVEC: Net Metering
03
A heavy-up done with the array goes on its own electrical record with the county. We pull both permits and schedule both inspections.
Fairfax County: Residential Solar Permits

We handle this for you

The offices and programs

Click through for the official pages. We do the filing, the scheduling, and the follow-up.

Permit office

Utility interconnection

Continue the plan

Connect the local and electrical decisions

Review the regional offer, combined solar-and-battery design, or the existing electrical service-area context for Fairfax.

Next step

Start with your bill and your address

Send a recent electric bill and the address. We review your usage, roof information, and electrical needs, then confirm the assessment needed for a written proposal. Estimates are free.

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